Picasa Web Albums
If you have photos or videos in a Picasa Web Album today, the easiest
way to still access, modify and share most of that content is to log in
to Google Photos, and all your photos and videos will already be there.
Using Google Photos, you can continue to upload and organize your
memories, as well as enjoy other great benefits like better ways to
search and share your images.

However, for those of you who don’t want to use Google Photos or who
still want to be able to view specific content, such as tags, captions
or comments, we will be creating a new place for you to access your
Picasa Web Albums data. That way, you will still be able to view,
download, or delete your Picasa Web Albums, you just won’t be able to
create, organize or edit albums (you would now do this in Google
Photos).

One thing to make clear is that none of this is happening today—if you
have a Picasa Web Album you can keep using it as normal. We’ll start
rolling out these changes on May 1, 2016.